WATCH: GOP senators rail against staggering $4.7 trillion in untraceable Treasury payments

Fox News Digital asked Republican senators on Capitol Hill to respond to the approximately 500,000 in untraceable payments made by the Treasury Department each year. 

"I'm not surprised at all, unfortunately," Sen. Roger Marshall, R-Kansas, said before adding, "They were leaving complete fields undone when they were filling out their financials, so this is a common theme. I'm not surprised."

Sen. Eric Schmitt, R-Missouri, called for an investigation into where those payments actually went. 

"There's so much waste. There's so much fraud, There's so much abuse in our government," Schmitt told Fox News Digital. "I'm glad there was a laser-like focus on it. We ought to make many of those reforms permanent, but there probably ought to be some investigations here about where this money actually went. I mean this is taxpayer money. People work hard."

"When you hear about this story that they didn't know where the money was going, it makes you mad because this is somebody's money, this is taxpayers' money when we have almost $37 trillion in debt, so this makes no sense at all," Scott said. 

"That is an inflection point that when most countries hit, you look at history, that's when great powers start to decline. So we have to get those savings."